He has to fuck her so, that both members are all the time in conatct. Make the missionary position, than put your body and head above her head and be only to a part with your cock inside her and make a bow with your dick, so both stiffies are all the time together. It feels so good, such kind of sex.
I'D LOVE TO SUCK ON YOUR CLIT AND GIVE YOU YOUR FIRST ORGASM THEN I'LL FUCK YOU AND GIVE YOU A SECOND ORGASM BY TELLING YOU THAT WHEN I'M READY TO CUM I'M GOING TO PULL OUT AND CUM ON YOUR CLIT THEN GO DOWN ON YOU AGAIN AND SUCK OFF MY CUM FROM YOUR CLIT AND PUSSY
THEN I'LL FUCK YOU AND GIVE YOU A SECOND ORGASM BY TELLING YOU THAT WHEN I'M READY TO CUM
I'M GOING TO PULL OUT AND CUM ON YOUR CLIT THEN GO DOWN ON YOU AGAIN AND SUCK OFF MY CUM FROM YOUR CLIT AND PUSSY